Search found 63 matches

by CaminaB_1D
Tue Mar 12, 2019 10:33 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: arrhenius equation
Replies: 1
Views: 10

arrhenius equation

have we learned how to use the arrhenius equation in the way that the homework problems 15.61 and beyond use them
by CaminaB_1D
Tue Mar 12, 2019 8:54 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Frequency factor
Replies: 3
Views: 16

Re: Frequency factor

yes that cleared it up for me! thank you!^^^
by CaminaB_1D
Tue Mar 12, 2019 8:43 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: 6th edition 15.49
Replies: 2
Views: 12

Re: 6th edition 15.49

someone correct me if I'm wrong but if it asks for the rate law of that specific step in the rxn I think you do include intermediates. However it is not included in the rate law of the overall reaction. The slow step indicates the overall rate law so if there was an intermediate in the reactants of ...
by CaminaB_1D
Tue Mar 12, 2019 4:07 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: molecularity
Replies: 3
Views: 13

molecularity

How would u indicate molecularity when given step 1 and 2 for a rxn mechanism
by CaminaB_1D
Tue Mar 12, 2019 11:16 am
Forum: General Rate Laws
Topic: stoichiometric coeffecients
Replies: 1
Views: 18

stoichiometric coeffecients

Do stoichiometric coefficients only matter for the unique rate or is there other instances in kinetics where stoichiometric coefficients are considered?
by CaminaB_1D
Tue Mar 12, 2019 11:10 am
Forum: Reaction Mechanisms, Reaction Profiles
Topic: rxn mechanisms
Replies: 3
Views: 9

rxn mechanisms

What exactly does rxn mechanisms tell us?
by CaminaB_1D
Tue Mar 12, 2019 11:07 am
Forum: Method of Initial Rates (To Determine n and k)
Topic: instantaneous and unique rate
Replies: 6
Views: 27

instantaneous and unique rate

is the instantaneous rate different from the unique rate or are they the same thing?
by CaminaB_1D
Tue Mar 12, 2019 11:04 am
Forum: Second Order Reactions
Topic: amounts of reactant and its affect on rate
Replies: 6
Views: 27

amounts of reactant and its affect on rate

If a reaction is second order with respect to reactant A, if the concentration of reactant A is doubled, is the rate quadrupled?
by CaminaB_1D
Mon Mar 11, 2019 11:01 am
Forum: First Order Reactions
Topic: concept
Replies: 2
Views: 18

concept

Is there a conceptual meaning behind a second order reaction?
by CaminaB_1D
Mon Mar 11, 2019 11:01 am
Forum: Zero Order Reactions
Topic: Concept
Replies: 4
Views: 21

Concept

Is there a conceptual meaning behind a zero order reaction?
by CaminaB_1D
Mon Mar 11, 2019 11:00 am
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Frequency factor
Replies: 3
Views: 16

Frequency factor

What is the frequency factor, A?
by CaminaB_1D
Mon Mar 11, 2019 9:44 am
Forum: Zero Order Reactions
Topic: Graphs
Replies: 6
Views: 16

Re: Graphs

Can anyone post the graphs for each rxn and sort of explain them? I didn't really get them down in my notes in class
by CaminaB_1D
Fri Mar 08, 2019 12:29 am
Forum: First Order Reactions
Topic: Question 15.27
Replies: 1
Views: 17

Re: Question 15.27

I also had a problem with this question but for part c "How much time must elapse for the concentration of A to decrease to (c) 15% of its initial concentration" I used the half life of a first order rxn to find k, then solved for t using the first order integrated rate law, however I cann...
by CaminaB_1D
Sun Mar 03, 2019 11:27 pm
Forum: General Rate Laws
Topic: Unique Rate
Replies: 2
Views: 19

Re: Unique Rate

How do we use the derivative to find the unique rate?? any math examples or problems of this?
by CaminaB_1D
Sun Mar 03, 2019 10:42 pm
Forum: General Rate Laws
Topic: 15.1 6th edition
Replies: 1
Views: 12

15.1 6th edition

Complete the following statements relating to the
production of ammonia by the Haber process, for which
the overall reaction is N2(g) 3 H2(g) S 2 NH3(g).

What is the Haber process?
by CaminaB_1D
Tue Feb 26, 2019 11:44 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: inert electrode?
Replies: 1
Views: 13

inert electrode?

How do I know when to use an inert electrode?
by CaminaB_1D
Tue Feb 26, 2019 11:09 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: cell diagrams
Replies: 1
Views: 25

cell diagrams

If asked to write the cell diagram for a reaction, how do you know if there should be a salt bridge or porous disk? Is one more common than the other? will it be specified somewhere in the problem?
by CaminaB_1D
Tue Feb 26, 2019 9:54 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: n
Replies: 8
Views: 51

Re: n

If they just give you a balanced redox reaction, do you then just look back at the half reactions and balance the charges again to figure out what the difference in moles of electrons were to get your n?
by CaminaB_1D
Tue Feb 26, 2019 8:08 pm
Forum: Balancing Redox Reactions
Topic: oxidizing agent and reducing agent
Replies: 15
Views: 100

oxidizing agent and reducing agent

What is the best way to remember how to identify which is the oxidizing agent and which is the reducing agent?
by CaminaB_1D
Sun Feb 24, 2019 9:44 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: 9.63
Replies: 1
Views: 25

9.63

9.63 Determine which of the following compounds are stable with respect to decomposition into their elements under standard conditions at 25 C (see Appendix 2A): (a) PCl5(g); (b) HCN(g); (c) NO(g); (d) SO (g). After calculating the standard free energy of formation of the compounds, why does a posit...
by CaminaB_1D
Sun Feb 24, 2019 1:29 am
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Concepts
Replies: 2
Views: 19

Concepts

I do not completely understand how the values of enthalpy and entropy explain the spontaneity of a reaction (aka the concepts of the Gibbs free energy equation), can someone give me a quick run down?
by CaminaB_1D
Wed Feb 13, 2019 4:01 am
Forum: Administrative Questions and Class Announcements
Topic: Lyndon's HOTDOG MIDTERM REVIEW SESSION!! FINALLY!
Replies: 49
Views: 2129

Re: Lyndon's HOTDOG MIDTERM REVIEW SESSION!! FINALLY!

Can anyone share the answers to questions 1-3 on Lyndon's review? I was an hour late to the review session bc I had a midterm
by CaminaB_1D
Tue Feb 05, 2019 12:33 pm
Forum: Student Social/Study Group
Topic: review sessions
Replies: 2
Views: 36

review sessions

Is there any information up for midterm review sessions yet?
by CaminaB_1D
Mon Feb 04, 2019 11:20 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: helpful hw problems?
Replies: 1
Views: 46

helpful hw problems?

Does anyone know which problems in the sixth edition cover what was gone over in today's lecture (Monday 2/4)? thanks!
by CaminaB_1D
Tue Jan 29, 2019 10:29 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Homework
Replies: 9
Views: 81

Homework

some of the homework problems do not seem to match up with any of the examples we did in class. Where do these start in the 6th edition
by CaminaB_1D
Sun Jan 20, 2019 7:44 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: 12.27 b 6th edition
Replies: 1
Views: 25

12.27 b 6th edition

A careless laboratory technician wants to prepare 200.0 mL of a 0.025 m HCl(aq) solution, but uses a 250.0-mL volumetric ask by mistake.

part b asks you to find the actual pH of the solution in the 250.0 mL flask, how do you do this with information given?
by CaminaB_1D
Sun Jan 20, 2019 2:12 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Given Kw
Replies: 2
Views: 20

Given Kw

Can anyone explain the reasoning behind, given a Kw (at any temperature, doesn't really matter), why do we know that the concentrations of [H30+] and [OH-] the same?
by CaminaB_1D
Tue Jan 15, 2019 4:52 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: ICE table
Replies: 4
Views: 36

ICE table

When do you know you have to use an ICE table?
by CaminaB_1D
Tue Jan 15, 2019 4:48 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: 11.39 6th edition
Replies: 4
Views: 68

11.39 6th edition

Can someone please explain this problem:

Use the information in Table 11.2 to determine the value of K at 300 K for the reaction 2 BrCl(g) + H2(g) ∆ Br2(g) + 2 HCl(g)
by CaminaB_1D
Tue Jan 15, 2019 4:38 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: 11.37 6th edition
Replies: 3
Views: 39

11.37 6th edition

I don't understand how to calculate K for part c of this problem, can someone please explain the reasoning for the answer that the solution manual comes to? 11.37 For the reaction N (g) + 3 H (g) ∆ 2 NH (g) at 223 400. K, K 41. Find the value of K for each of the following reactions at the same temp...
by CaminaB_1D
Tue Jan 15, 2019 4:09 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: 11.33 6th edition
Replies: 2
Views: 37

11.33 6th edition

11.33 A 0.500-L reaction vessel at 700. K contains 1.20 mmol SO2(g), 0.50 mmol O2(g), and 0.10 mmol SO3(g). At 700. K, Kc 1.7 106 for the equilibrium 2 SO2(g) O2(g) ∆ 2 SO3(g). (a) Calculate the reaction quotient Qc. (b) Will more SO3(g) tend to form? Why do we divide each elements moles by the volu...
by CaminaB_1D
Sat Dec 08, 2018 11:59 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Test 3 6b
Replies: 2
Views: 51

Test 3 6b

what was the answer to this 6b on test 3?

Order these cations from least to most polarizing power: Li+,Ca2+,Cs+,Ba2+

and can you explain why?
by CaminaB_1D
Sat Dec 08, 2018 11:37 pm
Forum: Air Pollution & Acid Rain
Topic: practice problems?
Replies: 1
Views: 28

practice problems?

are there any practice problems for acid rain?
by CaminaB_1D
Sat Dec 08, 2018 11:00 pm
Forum: Lewis Acids & Bases
Topic: 12.25
Replies: 1
Views: 24

12.25

Can someone walk me through exercise 12.25?

Calculate the initial molarity of Ba(OH)2 and the molarities of Ba2 , OH , and H3O in an aqueous solution that contains 0.43 g of Ba(OH)2 in 0.100 L of solution.
by CaminaB_1D
Sat Dec 08, 2018 2:06 am
Forum: Naming
Topic: order of ligands when going from name to formula
Replies: 3
Views: 40

order of ligands when going from name to formula

Based off the name of the coordination compound given, if there are multiple different ligands does it matter what order you write them when writing out the formula?
by CaminaB_1D
Sat Dec 08, 2018 2:01 am
Forum: Naming
Topic: 17.31 d
Replies: 1
Views: 18

17.31 d

Can someone walk me through how to get the formula of sodium bisoxalato(diaqua)ferrate(III)?
by CaminaB_1D
Sat Dec 08, 2018 1:52 am
Forum: Naming
Topic: confusion name to formula
Replies: 4
Views: 53

confusion name to formula

If we are given the name of a coordination compound, for example, potassium hexacyanidochromate(III), I see that the 'ate' in chromate means a negative complex. But when writing out the formula, since there is a potassium(a cation), does it counter the negative charge of the complex and therefore th...
by CaminaB_1D
Sat Dec 08, 2018 12:11 am
Forum: Administrative Questions and Class Announcements
Topic: FINAL PRACTICE - Lyndon's Churro Review Session [ENDORSED]
Replies: 118
Views: 3945

Re: FINAL PRACTICE - Lyndon's Churro Review Session [ENDORSED]

can someone explain 23 and why porphyrin ligand is tetradentrate
by CaminaB_1D
Mon Nov 26, 2018 9:33 pm
Forum: Hybridization
Topic: bond angles and increasing s-character
Replies: 2
Views: 40

bond angles and increasing s-character

Can someone please explain why the bond angles increase as the s-character of a hybrid orbital increases
by CaminaB_1D
Mon Nov 26, 2018 6:36 pm
Forum: Hybridization
Topic: 4.31
Replies: 2
Views: 35

4.31

4.31 "State the relative orientations of the following hybrid orbitals: (a) sp3; (b) sp; (c) sp3d2; (d) sp2."

What does it mean by relative orientations? what answer is this question exactly looking for?
by CaminaB_1D
Sun Nov 25, 2018 3:42 pm
Forum: Dipole Moments
Topic: distinguishing dipole moments
Replies: 1
Views: 28

distinguishing dipole moments

Can someone explain to me how we know there is a dipole moment in terms of bond vectors? perhaps an example as well?
by CaminaB_1D
Sun Nov 25, 2018 1:36 pm
Forum: Lewis Structures
Topic: Central atom of CNO-
Replies: 2
Views: 21

Central atom of CNO-

which is the central atom in CNO- ?
by CaminaB_1D
Mon Nov 19, 2018 12:04 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Electron geometry vs molecular shape
Replies: 4
Views: 31

Electron geometry vs molecular shape

Did we go over the difference between electron geometry and molecular shape?
by CaminaB_1D
Sun Nov 18, 2018 11:08 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Dipole moments
Replies: 8
Views: 68

Dipole moments

How do you know when certain dipole moments cancel each other out?
by CaminaB_1D
Sun Nov 11, 2018 11:56 pm
Forum: Dipole Moments
Topic: Dipole Moments [ENDORSED]
Replies: 10
Views: 159

Re: Dipole Moments [ENDORSED]

Which was the equation given for dipole moments?
by CaminaB_1D
Sun Nov 11, 2018 11:01 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: polarizing power of a cation
Replies: 3
Views: 48

polarizing power of a cation

can someone explain the polarizing power of a cation? Does it follow a trend on the periodic table? Does it apply for compounds?
by CaminaB_1D
Sun Nov 11, 2018 10:42 pm
Forum: Electronegativity
Topic: Greater Ionic character
Replies: 3
Views: 48

Greater Ionic character

for this hw question 3.77 "For each pair, determine which compound has bonds with greater ionic character: (a) HCl or HI; (b) CH4 or CF4; (c) CO2 or CS2", I understand we need to choose the compound that has a greater difference in electronegativites between its atoms, but for letter c how...
by CaminaB_1D
Sun Nov 04, 2018 11:59 pm
Forum: Lewis Structures
Topic: Lewis acids and bases
Replies: 1
Views: 36

Lewis acids and bases

Do we need to know Lewis acids and bases for the midterm?
by CaminaB_1D
Sun Nov 04, 2018 11:10 pm
Forum: Trends in The Periodic Table
Topic: 6th Edition 2.71
Replies: 4
Views: 54

Re: 6th Edition 2.71

Is this something we should worry for the midterm?
by CaminaB_1D
Sun Nov 04, 2018 9:22 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Heisenburg equation units
Replies: 2
Views: 39

Heisenburg equation units

When using the Heisenberg uncertainty, what are the correct units to use for the components of the equations? (mass, velocity, distance, etc.)
by CaminaB_1D
Sun Oct 28, 2018 7:01 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: electron configuration of tungsten
Replies: 1
Views: 98

electron configuration of tungsten

Can someone please explain to me how to get the electron configuration of Tungsten[W]? I know what the answer is but I just do not know how to get there
by CaminaB_1D
Sun Oct 28, 2018 5:40 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Z effective 2.37
Replies: 1
Views: 41

Z effective 2.37

can someone please explain to me how effective nuclear charge works in terms of 2.37. Thanks! "Which of the following statements are true for many- electron atoms? If false, explain why. (a) The effective nuclear charge Zeff is independent of the number of electrons present in an atom. (b) Elec...
by CaminaB_1D
Tue Oct 23, 2018 9:29 pm
Forum: DeBroglie Equation
Topic: deriving DeBroglie
Replies: 2
Views: 88

deriving DeBroglie

Can someone show me how to derive the DeBroglie equation? I am looking back in my notes and I must have written something down wrong because it is not making sense
by CaminaB_1D
Sun Oct 21, 2018 12:43 pm
Forum: Quantum Numbers and The H-Atom
Topic: 6th edition 2.1
Replies: 1
Views: 30

6th edition 2.1

Here is the question for reference: Which of the following increase when the electron in a hydrogen atom undergoes a transition from the 1s-orbital to a 2p-orbital? (a) Energy of the electron. (b) Value of n. (c) Value of l. (d) Radius of the atom. Can someone explain to me how we would determine th...
by CaminaB_1D
Tue Oct 16, 2018 7:56 pm
Forum: Properties of Light
Topic: Finding energy
Replies: 1
Views: 30

Finding energy

If you are given the number of photons produced (per second) and the wavelength of the light, how would you find how much energy (in joules) is produced as radiation at that wavelength? (referring to 1.59 in the 6th edition)
by CaminaB_1D
Sun Oct 14, 2018 8:03 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: 6th edition 1.15
Replies: 2
Views: 50

6th edition 1.15

I am having trouble figuring this out: 1.15 says "In the ultraviolet spectrum of atomic hydrogen, a line is observed at 102.6 nm. Determine the values of n for the initial and final energy levels of the electron during the emission of energy that leads to this spectral line." I understand ...
by CaminaB_1D
Sun Oct 14, 2018 6:43 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: E(n)=-hR/n^2
Replies: 3
Views: 52

Re: E(n)=-hR/n^2

What does the 'h' represent here in this equation?

Sorry, disregard this question. I knew it was Planck's constant, just had it rounded in my notes
by CaminaB_1D
Sun Oct 14, 2018 5:39 pm
Forum: Properties of Light
Topic: wavelengths and energy of a photon
Replies: 2
Views: 38

wavelengths and energy of a photon

Is there any relationship between the size of a wavelength and the energy of a photon? Or is the energy of a photon only relative to the frequency of a wave because of the equation E=hv?
by CaminaB_1D
Sun Oct 07, 2018 8:34 pm
Forum: Limiting Reactant Calculations
Topic: M.7
Replies: 1
Views: 28

M.7

can anyone help with M.7 in the sixth edition? I think I am doing something wrong with converting the masses to moles that is preventing me from figuring out the rest of the problem
by CaminaB_1D
Thu Oct 04, 2018 8:33 pm
Forum: Limiting Reactant Calculations
Topic: Calculating reactant moles [ENDORSED]
Replies: 4
Views: 70

Re: Calculating reactant moles [ENDORSED]

M.3 in the sixth edition!
by CaminaB_1D
Thu Oct 04, 2018 8:26 pm
Forum: Limiting Reactant Calculations
Topic: Calculating reactant moles [ENDORSED]
Replies: 4
Views: 70

Calculating reactant moles [ENDORSED]

Can someone explain the step of calculating reactant moles when solving a stoichiometry problem. In other words, I do not understand the "why" behind the calculations of this step.
by CaminaB_1D
Wed Oct 03, 2018 8:40 pm
Forum: Molarity, Solutions, Dilutions
Topic: V=n/c
Replies: 7
Views: 66

V=n/c

In the equation V=n/c, what does the 'n' represent?

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